I need to create a program in Java that when given a text file will parse, token

Question

I need to create a program in Java that when given a text file will parse, tokenize, and split the tokens into specified sized letter groups.

Example:

Input: “Second Programming Assignment”

Tokens: “second” “programming” “assignment”

Letter Groups (2) : "se" "ec" "co" "on" "nd" "pr" "ro" "og" "gr" "ra" "am" "mm" "mi" "in" "ng" "as" "ss" "si" "ig" "gn" "nm" "me" "en" "nt"

Letter Groups (3): "sec" "eco" "con" "ond" "pro" "rog" "ogr" "gra" "ram" "amm" "mmi" "min" "ing" "ass" "ssi" "sig" "ign" "gnm" "nme" "men" "ent"

Then it must generate the histogram of the letter groups.

The name of the text file will be the first argument of your main function and letterGroupLen will be the second argument of your main function.

Parse the input text file.

You will have 2 classes in your design. SentenceUtils and Histogram.

SentenceUtils class will tokenize and partition the tokens into letter groups

Histogram class using a HashMap data structure will count the number of occurrence of each letter group, and print the results when requested.

The solution is composed of 2 classes: a SentenceUtils Class to convert a string into letterGroups and also an Histogram class to do histogram processing. These 2 functionalities are independent of each other.

I have to implement body of the following 4 functions and also the main function:

private String[]getTokens(String line)

private void splitTokenstoLetterGroups(String[] tokens)

private void generateHistogram(ArrayList<String>letterGroups)

public void printHistogram()

Explanation / Answer

CODE

import java.io.File;

import java.util.ArrayList;

import java.util.Scanner;

public class SentenceUtils {

public static void main(String[] args) throws Exception

{

File fileName=new File("text.txt");

String line="";

Scanner scanInput=new Scanner(fileName);

while(scanInput.hasNextLine())

{

line+=scanInput.nextLine();

}

line=line.replaceAll(" ", "");

String[] tokens=getTokens(line);

}

private static String[] getTokens(String line)

{

//for three letter just replace 2 with the 3.

String[] tokens=line.split("(?<=\G.{2})");

splitTokenstoLetterGroups(tokens);

return tokens;

}

private static void splitTokenstoLetterGroups(String[] tokens)

{

ArrayList <String> letterGroups=new ArrayList<>();

for(int i=0;i<tokens.length;i++)

{

letterGroups.add(tokens[i]);

}

Histogram.generateHistogram(letterGroups);

}

}

public class Histogram {

public static void generateHistogram(ArrayList<String> letterGroups) {

HashMap<String, Integer> histoGramPairSet= new HashMap<String , Integer>();

int size=letterGroups.size();

for(int i=0;i<size;i++)

{

String str=letterGroups.get(i);

if (histoGramPairSet.containsKey(str))

{

int value=histoGramPairSet.get(str);

histoGramPairSet.put(str,++value );

}

else

{

histoGramPairSet.put(str, 1);

}

}

printHistogram(histoGramPairSet);

}

public static void printHistogram(HashMap<String, Integer> histoGram) {

System.out.println("Histohrams are :");

System.out.println(histoGram);

}

}

text.txt contains

Second Programming Assignment

OUTPUT:-

Histohrams are :
{mm=1, ss=1, Pr=1, in=1, en=1, co=1, ra=1, Se=1, t=1, nd=1, og=1, gA=1, ig=1, nm=1}

IF ANY QUERY REGARDING CODE PLEASE GET BACK TO ME

THANK YOU

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